Lenovo Thinkpad 15.6" Laptop with Intel Core i7-3720QM Quad-Core Processor, 16GB RAM, and 500GB Hard Drive Microsoft Windows 7 Professional 64-bit Edition NVIDIA NVS 5400M + Intel HD Graphics 4000 Intel Core i7-3720QM (3.6Ghz) 16GB DDR3 RAM Memory Toshiba 500GB Hard-Drive 7200RPM